Excerpts from SI definition documents
These are excerpts from SI definition documents to organize later.
I need to refer to these and write English sentences to complement articles such as 2012-07-14, 2012-07-19, and 2012-07-28.
Japanese: http://www.nmij.jp/library/units/si/R8/SI8J.pdf
English and French: http://www.bipm.org/utils/common/pdf/si_brochure_8.pdf
---
1.1 Quantities and units (p.103)
In order to establish a system of units, such as the International System of Units, the
SI, it is necessary first to establish a system of quantities, including a set of equations
defining the relations between those quantities. This is necessary because the
equations between the quantities determine the equations relating the units, as
described below.
---
2.2.2 Units with special names and symbols; units that incorporate special names and symbols (p.117)
Among these names and symbols the last four entries in Table 3 are of particular note
since they were adopted by the 15th CGPM (1975, Resolutions 8 and 9; CR, 105 and
Metrologia, 1975, 11, 180), the 16th CGPM (1979, Resolution 5; CR, 100 and
Metrologia, 1980, 16, 56) and the 21st CGPM (1999, Resolution 12; CR, 334-335
and Metrologia, 2000, 37, 95) specifically with a view to safeguarding human health.
---
3.1 SI prefixes (p.122)
Compound prefix symbols, that is, prefix symbols formed by the juxtaposition of two
or more prefix symbols, are not permitted. This rule also applies to compound prefix
names.
---
5.1 Unit symbols (p.130)
A prefix is never used in isolation, and compound prefixes are never used.
---
5.3.1 Value and numerical value of a quantity, and the use of quantity calculus (p.132)
Symbols for units are treated as mathematical entities. In expressing the value of a
quantity as the product of a numerical value and a unit, both the numerical value and
the unit may be treated by the ordinary rules of algebra. This procedure is described
as the use of quantity calculus, or the algebra of quantities. For example, the
equation T = 293 K may equally be written T/K = 293. It is often convenient to
write the quotient of a quantity and a unit in this way for the heading of a column in a
table, so that the entries in the table are all simply numbers.
-> Japanese
I need to refer to these and write English sentences to complement articles such as 2012-07-14, 2012-07-19, and 2012-07-28.
Japanese: http://www.nmij.jp/library/units/si/R8/SI8J.pdf
English and French: http://www.bipm.org/utils/common/pdf/si_brochure_8.pdf
---
1.1 Quantities and units (p.103)
In order to establish a system of units, such as the International System of Units, the
SI, it is necessary first to establish a system of quantities, including a set of equations
defining the relations between those quantities. This is necessary because the
equations between the quantities determine the equations relating the units, as
described below.
---
2.2.2 Units with special names and symbols; units that incorporate special names and symbols (p.117)
Among these names and symbols the last four entries in Table 3 are of particular note
since they were adopted by the 15th CGPM (1975, Resolutions 8 and 9; CR, 105 and
Metrologia, 1975, 11, 180), the 16th CGPM (1979, Resolution 5; CR, 100 and
Metrologia, 1980, 16, 56) and the 21st CGPM (1999, Resolution 12; CR, 334-335
and Metrologia, 2000, 37, 95) specifically with a view to safeguarding human health.
---
3.1 SI prefixes (p.122)
Compound prefix symbols, that is, prefix symbols formed by the juxtaposition of two
or more prefix symbols, are not permitted. This rule also applies to compound prefix
names.
---
5.1 Unit symbols (p.130)
A prefix is never used in isolation, and compound prefixes are never used.
---
5.3.1 Value and numerical value of a quantity, and the use of quantity calculus (p.132)
Symbols for units are treated as mathematical entities. In expressing the value of a
quantity as the product of a numerical value and a unit, both the numerical value and
the unit may be treated by the ordinary rules of algebra. This procedure is described
as the use of quantity calculus, or the algebra of quantities. For example, the
equation T = 293 K may equally be written T/K = 293. It is often convenient to
write the quotient of a quantity and a unit in this way for the heading of a column in a
table, so that the entries in the table are all simply numbers.
-> Japanese
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